Glass-molding apparatus.



E. G. JOHANSON. GLASSMOLDING APPARATUS.

APPLICATION FILED JULY 26.191].

1,297,566. Patented Mar; 18,1919.

2 SHEETS-SHEET l.

i- 2. ZmaZ 6i. db zzuzeom v INVENTOR.

ATTORNEYS.

E. G. JOHANSON.

GLASS MOLDING APPARATUS.

APPLICATXON FILED JULY 26,1911.

2 SHEETSSHEET 2- Patented Mar. 18, 1919 J/ad INVENTOR.

A TTORNEYS.

EMIL G. JOHANSON, or oI-IIoAGo, ILLINOIS.

GLASS-MOLDING APPARATUS.

Specification of Letters Patent.

Patented Mar. 18, 1919.

Application filed. July 26, 1917. Serial No. 182,975

To all whom it may concern:

. Be it known that I, EMIL G. JoIIANsoN, a subject ofthe King of Sweden,residing at Chicago, in the countyof Cook and State of Illinois,Improvements in Glass-Molding Apparatus, of which the following is aspecification.

This invention rel-ates to apparatus for molding. glass articles, andmore particularly an apparatus by which a design is impressed on a flatplate or sheet of glass while the latter is in a sufliciently soft stateto receive the impression.

The invention has for its object to provide a simple and efli'cientapparatus of the kind stated, and to this end it consists in a novelcombination and arrangement of parts to be hereinafter described andclaimed.

In order that the invention may be better understood, reference is hadto the accompanying drawings forming a part of this specification, andin said drawings,

. Figure 1 is a front elevation of the apparatus;

Fig. 2 is a plan view thereof;

Fig. 3 is a cross section on the line 3-3 of Fig. 1;

Fig. 4 is a detail in perspective, and

Fig. 5 is a plan view of a mold plate.

Referring specifically to the drawings, 10 denotes the bed of theapparatus, the same being mounted 'on legs 10*. Beneath the bed islocated a gas burner plate 11 having a large number of gas jets 12, andobtaining gas from a supply pipe 13. Any other suitable heater may beprovided.

At one side of the bed 10 are two vertical supports 14 for twovertically spaced rods 15 and 16, respectively, located at a suitableheight above the bed and extending in the direction of the lengththereof. On these rods is slidably mounted by bearings 17, a block 18supporting a hollow roller 19 extending across the bed 10, said rollerbeing free to turn and containing a spider gas heater 20 to heat thewall thereof. Any other suitable heating element may be employed.

The block 18 has at the bottom a depending extension 21 and between thelatter and the rear longitudinal edge of the bed 10 is located a screwshaft 22 extending in the direction of the length of the bed. The part21 carries a pair of pivoted levers 23 having jaws 24: at one end formedinto a nut to engage the screw shaft 22 and. travel along have inventednew and useful cordin 26 on the other lever to keep the jaws 24.

closed up around the shaft 22. Upon disengaging the latch 25 from thepin 26*, a

the same when said shaft is turned, and thus spring 27 connected to thelever 25 opens the jaws 24: to free the same from the shaft 22.

The bed 10 is open to permit the heating medium 11 beneath the same toheat a mold plate 28 laid on the bed, said plate being of steel andimpressed with depressions 29 arranged to produce the desired design.

In operation, a plate of soft glass is laid on the plate 28, and theroller 19 is lowered by a suitable screw device actuated by a hand wheel30, to press the glass plate. With the screw shaft 22 set in motion, theroller 19 will travel along the glass plate and press down on the latterso that the design on the plate 28 is impressed on the bottom of theglass plate. As the plate 28 and the roller 19 are kept hot the glasswill not harden appreciably during the process.

Fig. 5 shows a mold plate 32 having designs 33 to produce a plurality ofheadlight lenses with one operation, and only one mold plate.

It will be understood, of course, that the design on the mold plate maybe varied acg to the design which the glass is to have, and while thepreferred embodiment of the apparatus has been shown, it will be evidentthat various changes and modifications may be made without a departurefrom the spirit and scope of the invention as claimed hereinafter.

I claim 1. A glass molding apparatus, comprising a bed, a mold platesupported on said bed and having a design on its upper surface, a feedscrew extending in the direction of the length of the bed, longitudinalguides above the bed, a slide mounted on the guides and having a feednut engageable with the feed screw, and a vertically adjustable presserroller carried by the slide and positioned above the mold plate.

2. A glass molding apparatus, comprising a bed, a mold plate supportedon said bed and having a design on its upper surface, a feed screwextending in the direction of the length of the bed, longitudinal guidesabove the bed, a slide mounted on the guides, adjustable presser rollercarried by the slide a pair of pivoted levers carried by the slide andpositioned above the mold plate. and having jaws shaped to form a feednut .4. A glass molding apparatus, comprising engaging the feed screw, alatch for closing a bed, a mold plate supported on said bed the jawsover the feed screw, and a vertically and having a design on its uppersurface, adjustable presser roller carried by the slide a feed screwextending in the direotion'of and positioned above the mold plate. thelength of the bed, longitudinal guides 3. A glass molding apparatus,comprising above the bed, a slide mounted on the guides a bed, a moldplate supported on said bed and having a .feed nut engageable with theand having a design on its upper surface, a feed screw, a verticallyadjustable presser feed screw extending in the direction of rollercarried by the slide and positioned the length of the bed, longitudinalguides above the mold plate, said roller'being holabove the bed, a slidemounted on the guides, low, and a heater inside vthe roller. 1 a pair ofpivoted levers carried by the slide In testimony whereof I aflix mysignature. and having jaws shaped to form a feed nut engaging the feedscrew, and a vertically I EMIL G. J OHANSON.-

Gopies'of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

- Washington, D. (1.

